Simply a selection of fonts (German font names, e.g. "Magdeburg") that can be downloaded. Possibly useful in teaching/learning about culture (esp. for Schreibschrift, Fraktur, and Suetterlin), but not language or literature (other than it being helpful in learning how to read these types of fonts in older books etc.)
Easy to install, particularly if one has done it once before). Requires an un-ZIP program (link to one is provided).